CN115646251A - Preparation method and preparation equipment of 800 ℃ high-temperature-resistant powder coating - Google Patents
Preparation method and preparation equipment of 800 ℃ high-temperature-resistant powder coating Download PDFInfo
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- CN115646251A CN115646251A CN202211592184.6A CN202211592184A CN115646251A CN 115646251 A CN115646251 A CN 115646251A CN 202211592184 A CN202211592184 A CN 202211592184A CN 115646251 A CN115646251 A CN 115646251A
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Abstract
The invention discloses a preparation method and preparation equipment of 800 ℃ high-temperature-resistant powder coating, which relate to the technical field of powder coating production and comprise the following steps: the inner wall of the rotary sleeve is fixedly connected with a first spiral blade; the second spiral blade is fixedly connected to the periphery of the rotating shaft tube, the rotating shaft tube and the rotating sleeve are coaxially arranged, the rotating direction of the second spiral blade is the same as that of the rotating sleeve, and a mixing channel is formed in a space between the rotating shaft tube and the rotating sleeve; the third spiral blade is coaxially and rotatably arranged in the mixing channel at a position between the first spiral blade and the second spiral blade, and the rotating direction of the third spiral blade is opposite to that of the rotating shaft tube; the first stirring parts are rotationally arranged on the rotating sleeve, and guide the materials close to the rotating sleeve in the mixing channel to the rotating path of the third spiral blade when rotating; and the second stirring parts are rotatably arranged on the rotating shaft tube, and guide the materials close to the rotating shaft tube in the mixing channel to the rotating path of the third spiral blade when rotating.
Description
Technical Field
The invention relates to the technical field of powder coating production, in particular to a preparation method and preparation equipment of 800 ℃ high-temperature-resistant powder coating.
Background
In recent years, china gradually becomes the main production base of global cookers, ovens and exhaust pipes, and the market demand for high-temperature-resistant and heat-resistant powder coatings is increasing, especially for powder coatings in the fields of high-temperature-resistant equipment such as heating pipelines, hot blast stoves, silencers, chimneys and the like. The current powder coating basically requires that a coating film is baked to reach more than 200 ℃ and does not change color or change little color and does not fall off, and still can keep proper physical properties, the formula takes organic silicon resin as a main body to resist high temperature through secondary film formation of the coating, but the performance of the existing heat-resistant powder coating is obviously reduced along with further improvement of the environmental temperature.
The publication number is CN112795271A, and the name is insulating powder coating and a preparation method thereof, and the preparation method comprises the following steps: step one, mixing the epoxy resin, the curing agent, the curing accelerator, the filler, the auxiliary agent and the pigment according to the mass parts to obtain a preparation raw material; secondly, adding the preparation raw materials into a double-screw extruder for processing to obtain a material; step three, adding the material into a pulverizer for grinding processing to obtain primary powder; and step four, removing impurities from the primary powder through magnetic separation to obtain a finished powder coating, and completing preparation.
Such as among the prior art of above-mentioned patent, powder coating is in the in-process of preparation, generally with various raw materials through twin-screw extruder compounding extrusion prepare the coating of molten state, the problem that faces is that the mixing degree of coating is positive correlation with the rotational speed of screw, the mixing degree of coating is positive correlation with compounding time, and the compounding time of coating is negative correlation with the rotational speed of screw, this compounding efficiency that just leads to the twin-screw extruder of unit length is not high, consequently twin-screw extruder all sets up very long in order to improve the compounding effect usually, twin-screw extruder overlength can lead to inside temperature to concentrate difficult, the temperature is difficult to control, and the structure is heavy, inside clearance area increases etc. is not enough.
Disclosure of Invention
The invention aims to provide a preparation method and preparation equipment of a powder coating resistant to high temperature of 800 ℃ so as to solve the defects in the prior art.
In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a preparation equipment of resistant 800 ℃ high temperature powder coating, includes three spiral extrusion machines, three spiral extrusion machines include: the inner wall of the rotary sleeve is fixedly connected with a first spiral blade; the second spiral blade is fixedly connected to the periphery of the rotating shaft tube, the rotating shaft tube and the rotating sleeve are coaxially arranged, the rotating direction of the rotating shaft tube is the same as that of the rotating sleeve, and a mixing channel is formed in a space between the rotating shaft tube and the rotating sleeve; the third spiral blade is coaxially and rotatably arranged in the mixing channel at a position between the first spiral blade and the second spiral blade, and the rotating direction of the third spiral blade is opposite to that of the rotating shaft tube; the first stirring parts are rotationally arranged on the rotating sleeve, and guide the materials close to the rotating sleeve in the mixing channel to the rotating path of the third spiral blade when rotating; and the second stirring parts are rotatably arranged on the rotating shaft tube, and guide the materials close to the rotating shaft tube in the mixing channel to the rotating path of the third spiral blade when rotating.
Furthermore, the first stirring part and the second stirring part are augers or propellers.
Furthermore, the rotating shaft of the first stirring part extends to the outer side of the rotating sleeve and is fixedly connected with a gear coaxially, a fixed gear disc is coaxially arranged on the periphery of the rotating sleeve, the fixed gear is fixedly connected to a fixed foundation, and the gear is meshed with the gear disc.
Further, the rotating shaft of the second stirring part extends to the inner side of the rotating shaft tube and is fixedly connected with a first bevel gear, a fixing rod is coaxially arranged in the rotating shaft tube, one end of the fixing rod extends out of the rotating shaft tube and is fixedly connected to a fixed foundation, a second bevel gear is coaxially and fixedly connected to the fixing rod, and the second bevel gear is meshed with the first bevel gear.
Furthermore, one end of the third spiral blade, which is positioned at the outlet of the mixing channel, is fixedly connected with a rotating disc through a connecting rod, the rotating disc is coaxial with the mixing channel, and the rotating disc drives the third spiral blade to rotate.
Furthermore, reinforcing ribs are arranged on the third spiral blades.
Further, the one end that the third spiral leaf is located the import department of hybrid channel passes through first arc and the second arc of support fixedly connected with, and first arc and the inner wall looks adaptation of rotatory sheathed tube and the two sliding contact butt, and the outer wall looks adaptation of second arc and rotatory central siphon and the two sliding contact butt.
Furthermore, a shaft lever is coaxially and fixedly connected to the rotating disc, the shaft lever is rotationally connected to the fixed foundation, and the shaft lever is driven to rotate through the first driving assembly; one end of the rotary shaft tube, which is positioned at the outlet of the mixing channel, is rotatably connected to the rotary disc through a round rod, and the end part of the fixed rod movably penetrates through the round rod, the rotary disc and the shaft lever and then is fixedly connected to a fixed foundation; the rotating sleeve rotates to be connected to on the fixed basis, and the one end that the rotating shaft pipe is located the import of mixing passage passes through branch and rotating sleeve fixed connection, and the rotating sleeve drives through second drive assembly and rotates.
The preparation method of the 800 ℃ high-temperature-resistant powder coating is realized based on the preparation equipment, and comprises the following steps: s1, introducing raw materials of a powder coating resistant to a high temperature of 800 ℃ into a high-speed stirring mixer for mixing and crushing, wherein the rotating speed is 200r/min, and the mixing time is 5-8min to form a mixed material; s2, extruding the mixed material through a triple-screw extruder to obtain a molten coating; s3, preparing a sheet material by slicing and cooling the molten coating; s4, crushing and crushing the sheet materials in sequence to obtain coarse materials; and S5, grinding the coarse material by a double-separation ACM grinding machine, wherein the main grinding is carried out for 46-50HZ, and the auxiliary grinding is carried out for 20-25HZ, so as to obtain the 800 ℃ high-temperature resistant powder coating with the particle size of less than 10 mu m.
Further, the 800 ℃ high-temperature resistant powder coating comprises the following raw materials in parts by weight: 26.4% of organic silicon resin, 18.6% of epoxy resin, 2% of epoxy curing agent dimethyl imidazole, 41.8% of microencapsulated wollastonite, 10% of ferromanganese black, 0.2% of sand grain agent and 1% of curing agent B1530.
In the above technical solution, according to the preparation apparatus of the 800 ℃ high temperature resistant powder coating provided by the present invention, the third spiral blade rotates in a direction opposite to the first spiral blade and the second spiral blade, so that the materials spirally pushed by the third spiral blade in the mixing channel continuously impact and collide with the materials spirally pushed by the first spiral blade and the second spiral blade, so that the materials at each position in the mixing channel are fully mixed and the agglomerated materials are scattered, meanwhile, when the first stirring member rotates, the material close to the rotating sleeve in the mixing channel is guided to the rotating path of the third spiral blade, when the second stirring member rotates, the material close to the rotating shaft tube in the mixing channel is guided to the rotating path of the third spiral blade, and the material in the mixing channel is continuously turned over, so that the mixing effect of the material in the unit length of the mixing channel is greatly improved, the overall length of the mixing channel is reduced, the temperature in the mixing channel is concentrated and easily controlled, and the cleaning of the interior of the mixing channel is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
FIGS. 1-3 are schematic diagrams of the overall structure provided by the embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the structure of FIG. 2 according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of the structure of FIG. 3 according to an embodiment of the present invention;
FIGS. 6-7 are schematic views illustrating a connection structure of the rotating sleeve, the first spiral blade and the first stirring member according to an embodiment of the present invention;
fig. 8-10 are schematic views illustrating a connection structure of the rotating shaft tube, the second spiral blade and the second stirring member according to the embodiment of the present invention;
FIG. 11 is a schematic view of a connection structure of a third spiral blade, a connection rod and a rotating disk according to an embodiment of the present invention;
fig. 12 is a schematic overall structure diagram according to another embodiment of the present invention.
Description of reference numerals:
1. rotating the sleeve; 2. a first helical blade; 3. rotating the shaft tube; 4. a second helical blade; 5. a third helical blade; 6. a first stirring member; 7. a second stirring member; 8. a gear; 9. a fluted disc; 10. a first bevel gear; 11. a second bevel gear; 12. fixing the rod; 13. a connecting rod; 14. rotating the disc; 15. a support; 16. a first arc-shaped plate; 17. a second arc-shaped plate; 18. a shaft lever; 19. a round bar; 20. a support rod.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
Referring to fig. 1-12, an apparatus for preparing a powder coating material resistant to a high temperature of 800 ℃ according to an embodiment of the present invention includes a triple-screw extruder, the triple-screw extruder includes a rotary sleeve 1, a rotary shaft tube 3, a third screw blade 5, a plurality of first stirring components, and a plurality of second stirring components, wherein the rotary sleeve is rotatably disposed on a fixed base, the fixed base is a fixed structure such as a rack, a first screw blade 2 is fixedly connected to an inner wall of the rotary sleeve 1, a second screw blade 4 is fixedly connected to an outer periphery of the rotary shaft tube 3, the rotary shaft tube 3 and the rotary sleeve 1 are coaxially disposed and have the same rotation direction, when the rotary shaft tube is fixedly connected to the rotary sleeve, the first screw blade 2 and the second screw blade 4 rotate synchronously, a mixing channel is formed between an outer wall of the rotary shaft tube 3 and an inner wall of the rotary sleeve 1, one end of the mixing channel is an inlet, and the other end of the mixing channel is an outlet, a third helical blade 5 is coaxially and rotatably arranged at a position, which is positioned between the first helical blade 2 and the second helical blade 4, in the mixing channel, the rotating direction of the third helical blade 5 is opposite to that of the rotating shaft tube 3, the inner helical edge of the third helical blade 5 is matched with the outer helical edge of the second helical blade 4, the outer helical edge of the third helical blade 5 is matched with the inner helical edge of the first helical blade 2, each first stirring part is rotatably arranged on the rotating sleeve 1, each first stirring component is arranged along the circumferential direction and the axial direction of the rotating sleeve 1, when rotating, each first stirring part guides the material close to the rotating sleeve 1 in the mixing channel to the rotating path of the third helical blade 5 so as to fully mix the material, each second stirring part is rotatably arranged on the rotating shaft tube 3, each second stirring component is arranged along the circumferential direction and the axial direction of the rotating shaft tube 3, when rotating, each second stirring part guides the material close to the rotating shaft tube 3 in the mixing channel to the rotating path of the third helical blade 5 And the mixture is fully mixed. Preferably, the first stirring part and the second stirring part are augers or propellers.
In the above technical solution, according to the preparation apparatus of the 800 ℃ high temperature resistant powder coating provided by the present invention, the third spiral blade 5 rotates in a direction opposite to the first spiral blade 2 and the second spiral blade 4, so that the materials spirally pushed by the third spiral blade 5 in the mixing channel continuously impact and collide with the materials spirally pushed by the first spiral blade 2 and the second spiral blade 4, so that the materials at each position in the mixing channel are fully mixed and the agglomerated materials are scattered, meanwhile, when the first stirring member rotates, the material close to the rotating sleeve 1 in the mixing channel is guided to the rotating path of the third spiral blade 5, when the second stirring member rotates, the material close to the rotating shaft tube 3 in the mixing channel is guided to the rotating path of the third spiral blade 5, and the material in the mixing channel is continuously turned over, so that the mixing effect of the material in the unit mixing channel length is greatly improved, the overall length of the mixing channel is reduced, the temperature in the mixing channel is concentrated and easy to control, and the cleaning of the interior of the mixing channel is facilitated.
As a preferable technical scheme of the invention, a rotating shaft of the first stirring part extends to the outer side of the rotating sleeve 1 and is coaxially and fixedly connected with a gear 8, a fixed gear 9 is coaxially arranged on the periphery of the rotating sleeve 1, the fixed gear 8 is fixedly connected on a fixed base, the gear 8 is meshed with the gear 9, when the rotating sleeve 1 rotates, the first stirring part and the gear 8 on the rotating sleeve are driven to synchronously rotate, the gear 8 revolves around the gear 9, the gear 8 rotates, the first stirring part 6 stirs materials propelled by the first helical blade 2 to a propelling path of the third helical blade 5, and therefore the materials on the propelling path of the first helical blade 2 are mixed with the materials on the propelling path of the third helical blade 5.
As a preferred technical solution of the present invention, a rotating shaft of the second material stirring member extends to the inner side of the rotating shaft tube 3 and is fixedly connected with a first bevel gear 10, a fixed rod 12 is coaxially arranged in the rotating shaft tube 3, one end of the fixed rod 12 extends out of the rotating shaft tube 3 and is fixedly connected to a fixed base, a second bevel gear 11 is coaxially and fixedly connected to the fixed rod 12, the second bevel gear 11 is meshed with the first bevel gear 10, when the rotating shaft tube 3 rotates, the rotating shaft tube 3 drives a second stirring member 7 thereon to synchronously rotate, so that the first bevel gear 10 revolves around the second bevel gear 11, thereby the first bevel gear 10 rotates to drive the second stirring member 7 to rotate, the second stirring member 7 stirs the material recommended by the second spiral blade 4 to a propelling path of the third spiral blade 5, thereby mixing the material on the propelling path of the second spiral blade 4 with the material on the propelling path of the third spiral blade 5, and further mixing the material on the propelling path of the first spiral blade 2 with the material on the propelling path of the second spiral blade 4, thereby efficiently mixing the material at each position in the mixing channel.
As a preferable technical scheme of the invention, one end of the third spiral blade 5, which is positioned at the outlet of the mixing channel, is fixedly connected with a rotating disc 14 through a connecting rod 13, the rotating disc 14 is coaxial with the mixing channel, the rotating disc 14 drives the third spiral blade 5 to rotate, and reinforcing ribs are arranged on the third spiral blade 5. Further, the one end that third helical blade 5 is located the import department of hybrid channel passes through the first arc 16 of support 15 fixedly connected with and second arc 17, and first arc 16 and the inner wall looks adaptation of rotatory sleeve pipe 1 and the two sliding contact butt, and second arc 17 and the outer wall looks adaptation of rotatory central siphon 3 and the two sliding contact butt to can support the third spiral, promote the rotational stability of third spiral. Further, a shaft lever 18 is coaxially and fixedly connected to the rotating disc 14, the shaft lever 18 is rotatably connected to the fixed base, and the shaft lever 18 is driven by a first driving assembly to rotate; one end of the rotating shaft tube 3, which is positioned at the outlet of the mixing channel, is rotatably connected to the rotating disc 14 through a round rod 19, and the end of the fixed rod 12 is fixedly connected to a fixed foundation after movably penetrating through the round rod 19, the rotating disc 14 and the shaft lever 18; the rotating sleeve 1 is rotatably connected to a fixed base, one end of the rotating shaft tube 3, which is positioned at the inlet of the mixing channel, is fixedly connected with the rotating sleeve 1 through a supporting rod 20, and the rotating sleeve 1 is driven to rotate through a second driving assembly. The first driving assembly and the second driving assembly can be driven by a motor assembly preferably.
In another technical scheme provided by the invention, referring to fig. 11, one end of the third spiral blade 5 located at the outlet of the mixing channel is fixedly connected with a rotating disc 14 through a connecting rod 13, the rotating disc 14 is coaxial with the mixing channel, a shaft lever 18 is coaxially and fixedly connected to the rotating disc 14, the shaft lever 18 is rotatably connected to a fixed base, the motor assembly drives the shaft lever 18 to rotate, the shaft lever 18 drives the rotating disc 14 to rotate, and the rotating disc 14 drives the third spiral blade 5 to rotate through the connecting rod 13; further, one end of the third spiral blade 5, which is located at the inlet of the mixing channel, is fixedly connected with a first arc-shaped plate 16 and a second arc-shaped plate 17 through a support 15, the first arc-shaped plate 16 is matched with the inner wall of the rotating sleeve 1 and is in sliding contact with and abutted against the inner wall, and the second arc-shaped plate 17 is matched with the outer wall of the rotating shaft tube 3 and is in sliding contact with and abutted against the outer wall; one end of the rotary shaft tube 3, which is positioned at the outlet of the mixing channel, is rotatably and penetratingly connected to the rotary disc 14 through a round rod 19, and one end of the round rod 19, which is far away from the rotary shaft tube 3, is movably penetrated through a shaft rod 18 and then is driven to rotate through another motor assembly; the end part of the fixed rod 12 is movably connected to a fixed foundation after passing through the round rod 19; rotating sleeve 1 rotates to be connected to fixed basis on, and the one end that rotating shaft pipe 3 is located the import of mixing passage is passed through branch 20 and is rotated with rotating sleeve 1 and be connected, and rotating sleeve 1 rotates through the drive of another motor element, and motor element is motor gear 8 drive mechanism or motor belt drive mechanism, and this is prior art, and it is unnecessary to describe again. In this embodiment, the rotating shaft tube 3, the rotating sleeve 1, and the third helical blade 5 are respectively driven by three different motor assemblies, the rotating directions of the first helical blade 2 and the second helical blade 4 are the same, but the rotating speeds of the first helical blade 2 and the second helical blade 4 are different, the rotating direction of the third helical blade 5 is opposite to the rotating directions of the first helical blade 2 and the second helical blade 4, and the rotating speed of the third helical blade 5 is between the rotating speeds of the first helical blade 2 and the second helical blade 4, under this setting, collisions between materials in each part of the mixing channel are more severe, and the mixing efficiency and the mixing effect of the present invention are maximized.
The invention also provides a preparation method of the 800 ℃ high-temperature-resistant powder coating, which is realized based on the preparation equipment and comprises the following steps: s1, introducing raw materials of a powder coating resistant to a high temperature of 800 ℃ into a high-speed stirring mixer for mixing and crushing, wherein the rotating speed is 200r/min, and the mixing time is 5-8min to form a mixed material; s2, extruding the mixed material through a three-screw extruder to obtain a molten coating; s3, preparing a sheet material by slicing and cooling the molten coating; s4, crushing and crushing the sheet materials in sequence to obtain coarse materials; and S5, grinding the coarse material by a double-separation ACM grinding machine, wherein the main grinding is carried out for 46-50HZ, and the auxiliary grinding is carried out for 20-25HZ, so as to obtain the 800 ℃ high-temperature resistant powder coating with the particle size of less than 10 mu m.
As a preferable technical scheme of the invention, the 800 ℃ high-temperature-resistant powder coating comprises the following raw materials in parts by weight: 26.4% of organic silicon resin, 18.6% of epoxy resin, 2% of epoxy curing agent dimethyl imidazole, 41.8% of microencapsulated wollastonite, 10% of ferromanganese black, 0.2% of graining agent and 1% of curing agent B1530. The 800 ℃ high-temperature resistant powder coating can still maintain proper mechanical properties and play a role in protection after being subjected to coating damage for a long time at the temperature of more than 800 ℃, the addition of the microencapsulated wollastonite greatly improves the open fire resistance of the powder coating, the temperature can be higher than 750 ℃ and is resistant to burning, free of foaming and free of pulverization, the microencapsulated wollastonite takes the cured products of epoxy resin and ethylenediamine as a capsule film and takes the wollastonite as a capsule core to wrap the wollastonite, so that the burning resistance of the powder is improved, the intermiscibility between the wollastonite and inorganic silicon resin components is improved, and the high temperature resistance of the wollastonite as a powder coating filler is improved. The organic silicon resin can not be completely decomposed at high temperature to be changed into gas, and gradually flows and spreads in the whole framework, and the finally formed inorganic film has excellent temperature resistance.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and are not to be construed as limiting the scope of the invention.
Claims (10)
1. The utility model provides a preparation equipment of 800 ℃ high temperature resistant powder coating, includes three spiral extruders, its characterized in that, three spiral extruders include:
the inner wall of the rotary sleeve is fixedly connected with a first spiral blade;
the second spiral blade is fixedly connected to the periphery of the rotating shaft tube, the rotating shaft tube and the rotating sleeve are coaxially arranged, the rotating direction of the rotating shaft tube is the same as that of the rotating sleeve, and a mixing channel is formed in a space between the rotating shaft tube and the rotating sleeve;
the third spiral blade is coaxially and rotatably arranged in the mixing channel at a position between the first spiral blade and the second spiral blade, and the rotating direction of the third spiral blade is opposite to that of the rotating shaft tube;
the first stirring parts are rotationally arranged on the rotating sleeve, and when rotating, the first stirring parts guide the materials close to the rotating sleeve in the mixing channel to the rotating path of the third spiral blade;
and the second stirring parts are rotatably arranged on the rotating shaft tube, and guide the materials close to the rotating shaft tube in the mixing channel to the rotating path of the third spiral blade when rotating.
2. The manufacturing apparatus as set forth in claim 1 wherein said first and second stirring members are augers or propellers.
3. The manufacturing apparatus as set forth in claim 2, wherein the rotating shaft of the first stirring member extends to the outside of the rotating sleeve and is fixedly connected with a gear coaxially, a fixed gear is coaxially arranged on the periphery of the rotating sleeve, the fixed gear is fixedly connected to the fixed base, and the gear is engaged with the toothed gear.
4. The manufacturing apparatus as claimed in claim 2, wherein the rotating shaft of the second stirring member extends to the inner side of the rotating shaft tube and is fixedly connected with a first bevel gear, a fixed rod is coaxially arranged in the rotating shaft tube, one end of the fixed rod extends out of the rotating shaft tube and is fixedly connected to the fixed foundation, a second bevel gear is coaxially and fixedly connected with the fixed rod, and the second bevel gear is meshed with the first bevel gear.
5. The apparatus as set forth in claim 4, wherein the third spiral blade is fixedly connected at an end thereof located at an outlet of the mixing passage to a rotary disk coaxial with the mixing passage through a connecting rod, the rotary disk driving the third spiral blade to rotate.
6. The manufacturing apparatus as set forth in claim 5 wherein said third spiral blade is provided with reinforcing ribs thereon.
7. The manufacturing apparatus as set forth in claim 5, wherein the third spiral blade has a first arc-shaped plate and a second arc-shaped plate fixedly connected to one end of the mixing channel at the inlet thereof through a bracket, the first arc-shaped plate is fitted to the inner wall of the rotating casing and slidably contacted and abutted thereto, and the second arc-shaped plate is fitted to the outer wall of the rotating shaft tube and slidably contacted and abutted thereto.
8. The preparation equipment according to claim 5, wherein a shaft rod is fixedly connected to the rotating disc coaxially, the shaft rod is rotatably connected to the fixed base, and the shaft rod is driven to rotate by the first driving assembly; one end of the rotary shaft tube, which is positioned at the outlet of the mixing channel, is rotatably connected to the rotary disc through a round rod, and the end part of the fixed rod movably penetrates through the round rod, the rotary disc and the shaft lever and then is fixedly connected to a fixed foundation; the rotating sleeve rotates to be connected to on the fixed basis, and the one end that the rotating shaft pipe is located mixing channel's import passes through branch and rotating sleeve fixed connection, and the rotating sleeve drives through the second drive assembly and rotates.
9. A method for preparing a powder coating resistant to high temperatures of 800 ℃, which is implemented on the basis of the preparation device of any one of claims 1 to 8, and comprises the following steps:
s1, introducing raw materials of a powder coating resistant to a high temperature of 800 ℃ into a high-speed stirring mixer for mixing and crushing, wherein the rotating speed is 200r/min, and the mixing time is 5-8min to form a mixed material;
s2, extruding the mixed material through a triple-screw extruder to obtain a molten coating;
s3, preparing a sheet material by slicing and cooling the molten coating;
s4, crushing and crushing the sheet materials in sequence to obtain coarse materials;
and S5, grinding the coarse material by a double-separation ACM grinding machine, wherein the main grinding is carried out for 46-50HZ, and the auxiliary grinding is carried out for 20-25HZ, so as to obtain the 800 ℃ high-temperature resistant powder coating with the particle size of less than 10 mu m.
10. A preparation method according to claim 9, wherein the 800 ℃ high-temperature-resistant powder coating comprises the following raw materials in parts by weight: 26.4% of organic silicon resin, 18.6% of epoxy resin, 2% of epoxy curing agent dimethyl imidazole, 41.8% of microencapsulated wollastonite, 10% of ferromanganese black, 0.2% of graining agent and 1% of curing agent B1530.
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| CN117839473A (en) * | 2024-03-05 | 2024-04-09 | 朝阳金达钼业有限责任公司 | Furnace burden mixer for ferromolybdenum smelting |
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| CN117839473A (en) * | 2024-03-05 | 2024-04-09 | 朝阳金达钼业有限责任公司 | Furnace burden mixer for ferromolybdenum smelting |
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| CN115646251B (en) | 2023-09-22 |
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